SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'a02580beb65247933dcd928be9abb94a1e6c804f8cc703b6c72562bc359b326f' 
  AND token = 'm3VlvPNG9zVX4+hLHIhdS5OCcHhwx93qWCqXfPzwUHY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00008

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}